Type coordinates for an object and move all other selected objects accordingly
Select all of your object while holding Shift. Make sure you select the object you want at the center last.

While all the objects are selected, press Ctrl + P and select "Object".

Now when you move the object that the others are parented to, the rest will move along with it.

Make sure your 3d cursor is in the center by pressing Shift + S, and then selecting "Cursor to center."

Now, select the object you want at the center, press Shift + S, and select object to Selection to Cursor."